Chronicles the adventures and misadventures of Hiccup Horrendous Haddock the Third as he tries to pass the important initiation test of his Viking clan, the Tribe of the Hairy Hooligans, by catching and training a dragon.

A Viking lesson in pirating takes a strange turn when Hiccup and his best friend, Fishlegs, accidentally raid the wrong ship while trying to escape Sharkworms, The two lads rescue a tiny yet arrogant nanodragon named Ziggerastica, but then they are kidnapped as part of a vicious plot to steal every dragon on the Isle of Berk! Hiccup must rely on his tiny friend, and his ability to speak Dragonese, to save the day...again!

Hiccup Horrendous Haddock III tries to save his dragon, Toothless, from being banished, but first he must steal a carefully stored Viking book from the Meathead Public Library, where he is sure to encounter the Hairy Scary Librarian and his army of warriors and dragons.

Hiccup Horrendous Haddock III, the reluctant Viking hero, tries to make the most of his somewhat limited time to discover America, return to Berk, save his father, fight Polarserpents, and win a swimming race.

Hiccup the Viking must fight dragons, toungetwisters, and vampire ghouldeaths to save the town from certain destruction.

In exile, and hunted by dragons and humans alike, can Hiccup the Viking find the dragon's jewel and save the world from destruction?

"The Doomsday of Yule has arrived, and the future of dragonkind lies in the hands of one boy with nothing to show, but everything to fight for. Hiccup's quest is clear... But can he end the rebellion? Can he prove himself to be king? Can he save the dragons? The stakes have never been higher, as the very fate of the Viking world hangs in the balance!" --